I don't see the problem with using two middle names. I've loved the idea since I was 8 and discovered that my cousins had two middle names not one. I was so jealous. But you would have to be careful with adding an extra name to two long names or it might become to much. Both the names you listed would only work if you have a shorter last name, IMO anyway.

I think I'm in the minority on this site, but two middle names is just too much name. It's beautiful that you are into those virtues (Faith and Peace) but I really don't think they add much to your current combinations.